bridge: add proper RCU annotation to should_route_hook

Add br_should_route_hook_t typedef, this is the only way we can
get a clean RCU implementation for function pointer.

Move route_hook to location where it is used.

Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com>
Signed-off-by: Stephen Hemminger <shemminger@vyatta.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 3 insertions, 1 deletions

diff --git a/include/linux/if_bridge.h b/include/linux/if_bridge.h
index 0d241a5c4909..f7e73c338c40 100644
--- a/include/linux/if_bridge.h
+++ b/include/linux/if_bridge.h
@@ -102,7 +102,9 @@ struct __fdb_entry {
 #include <linux/netdevice.h>
 
 extern void brioctl_set(int (*ioctl_hook)(struct net *, unsigned int, void __user *));
-extern int (*br_should_route_hook)(struct sk_buff *skb);
+
+typedef int (*br_should_route_hook_t)(struct sk_buff *skb);
+extern br_should_route_hook_t __rcu *br_should_route_hook;
 
 #endif